Several Differentiation Formulas of Special Functions. Part III
In this article, we give several differentiation formulas of special and composite functions including trigonometric function, inverse trigonometric function, polynomial function and logarithmic function.
In this article, we give some important properties of forward difference, backward difference, central difference and difference quotient and forward difference, backward difference, central difference and difference quotient formulas of some special functions .
Bo Li, Yanping Zhuang, Yanhong Men and Xiquan Liang
Several Integrability Formulas of Special Functions. Part II
In this article, we give several differentiation and integrability formulas of special and composite functions including the trigonometric function, the hyperbolic function and the polynomial function .
Currently, one of the challenging tasks for Chinese engineering community is to construct a water-way crossing of Qiongzhou Strait in the south of China. This project has also gained significant attention from researchers in academia. The study presented herein is centered on providing a feasible solution for ac-complishing the above mentioned task. Initially, different alternatives as the best location, judged on the basis of the environmental constraints, are studied. Then the comparison between various structural solutions such as suspension bridge, submarine tunnel and SFT is presented. Among these solutions, SFT appears to be a very suitable alternative for Qiongzhou Strait waterway crossing due to distinctive advantages, like shorter distance, lower cost, less impact on environment and navigation, etc. Based on the appropriate conception for cross sections, support systems, materials, joints and connection schemes, a numerical model is developed by means of the FEM software ANSYS/Fluent. It is then analyzed under the influence of different environmental loading conditions, varying the wave heights and lengths, current velocities and water depths, which are typical in Qiongzhou Strait. The numerical results reveal that the proposed SFT solution performs safely even under extreme weather conditions.
The construction and good operation of college student entrepreneurship organizations play an important role in the cultivation of college student entrepreneurship awareness and the improvement of college student entrepreneurship ability and success rate. This paper summarizes the factors restricting student entrepreneurship and proposes the suggestion of constructing student entrepreneurship alliance based on the analysis of the education and the current operation status of entrepreneurship organizations in Hebei Province. With the idea of “Promoting employment by entrepreneurship to realize social entrepreneurship” and the target of “Improving college student entrepreneurship success rate”, college student entrepreneurship alliance integrates multi social resources with the involvement of the government, society, enterprises and colleges. The operation of the alliance is divided into education stage, incubation stage and marketing operation stage. By the three stages’ cultivation to college students, it plays a positive role in aspects such as the participation of college education and social education, the promotion of entrepreneurship education development and college student entrepreneurship success rate and district economic development.
Cooperative adaptive cruise control (CACC) for human and autonomous self-driving aims to achieve active safe driving that avoids vehicle accidents or traffic jam by exchanging the road traffic information (e.g., traffic flow, traffic density, velocity variation, etc.) among neighbor vehicles. However, in CACC, the butterfly effect is encountered while exhibiting asynchronous brakes that easily lead to backward shock-waves and are difficult to remove. Several critical issues should be addressed in CACC, including (i) difficulties with adaptive steering of the inter-vehicle distances among neighbor vehicles and the vehicle speed, (ii) the butterfly effect, (iii) unstable vehicle traffic flow, etc. To address the above issues in CACC, this paper proposes the mobile edge computing-based vehicular cloud of the cooperative adaptive driving (CAD) approach to avoid shock-waves efficiently in platoon driving. Numerical results demonstrate that the CAD approach outperforms the compared techniques in the number of shock-waves, average vehicle velocity, average travel time and time to collision (TTC). Additionally, the adaptive platoon length is determined according to the traffic information gathered from the global and local clouds.